At first: I like Linux Mint a lot. It makes my linux life easy! And my work as a webdeveloper I can do very well with this linux.

I am using my Lenovo t440s (20AQ0069GE) since a few month with Linux Mint 17. Besides I had some troubles with f.e. keyboard layout (print button didn't work), the brightness keys are not working properly, restarting from sleep modus needs about 1 Minute and some other small things, the main and really annoying problems I have, is with my wireless card Intel Wireless-AC 7260.

It sometimes does not connect to WLAN or needs 10 or more times to be successfull. If it is connected, after a while the WLAN speed becomes slower and I have to reconnect to WLAN, if possible. It does not depend on which WLAN (home, friends, office).

Or other situation: I am at home, working. then I got to sleep modus. When I wake up the notbook on another place, it stays "connected" with my home WLAN (even I am not at home anymore), instead to connect to the new found WLAN. I have to do this manually.

I read a few month ago about problems like these with this WLAN Card. Is there meanwhile a known good solution for this Card?

After extracting the archive (it works like a ZIP file), go to the folder where you extracted it. Inside that folder please right-click in the empty space > Open in Terminal.
In that terminal, please run these commands: